Has anybody tried the Android version of SPQR Latin? It's available for both Ipad and Android tablets, but I don't own either. My only reason to purchase a tablet would be to use this app, and Android tablets cost less.

I actually have two different apps by that name. If you mean the one with all the reference material, it's alright. I think it would be nice if it were more expansive, e.g., featured noun paradigms past the third declension.If you mean the quiz one, it's good too. It performs its function well. You can quiz yourself on vocab, noun grammar, adjectives/pronouns, and verbs separately.

After seeing this thread, I bought one. It contains some books, a dictionary, and some tools a quiz, flashcard and so on. I have not used it many times. It is a little beyond my current level of Latin.